Drilling device



May 27 1924.

c. CONTAL A DRILLING DEVIQ Filed oct. 8.71920' 2 sheets-sheen 1 May 27 1924.

www f on CP m u Ly M5 6 Patented May 27, 1924.

U NITED 'STATL'Egs 1,495,885 lPivrlz'irr osereici?..

CAMILLE coNiziL, or PARIS, FRANCE.

DRILLING DEVICE.

-iippiicaiion ined focto'be'r s, i920. serial No. 415,662. 'i"

-' france-of the drilling devicei'n such manner 'as "to :be moved perpendicularly -to the drill spindle for the lpu'rpose of coupling and unc'ouplingthe said vdisk #and of 'changing the position 'o'fthe fp'inio'n acc-ordingto the speed 'to fue obtained.

This zinvention relates toi-improvements in drilling devices of this class and more pair'- ticula'rly `to"an actuating device v`for the disk 'whereby the drilling device can 'beused in -a f narrow space in 'which tit would be impossible to `in'ake a 'complete revolution of the operating crank. crank is iinade to Vactua-te vthe said` disk by means of 'a rat'c'liet "member whereby the crank is connected -withthe disk only `in one direction vand can return :backwards avithout actuating the drill point( This invention falso consists in fa. special method fof Ydisposing fthe ratchet 4'member whereby lthe latter "can begi-ven avery simple, strong-and inexpensive construction to gether with ya I'ininiinuin size.

The accompanying v1drawing represents by way of example a drilling device according to this invention.

.Figa 1 is an elevation yof the drilling de-V vice. i

Fig. 2 is an axial section of the inainv 'screw thread 2a. A crank 3 To `l`this effect the lis loosely :ro-

tatable 'upon a circula-r portion 4 o'f the Y shaft 2 fand is held -upon the said 'shaft by 'means o`f'a shoulder or a head -5 formed ffor B carries a set of notches constituting interior ratchet "teeth 7. i The portion 4oftlie Vsha-ft is traversed by an aperture 8 having l:therein two paiiflsfQ-spread apartby a spring 'l0' disposed between the same.

The vsfaid pawls aire disposed in such nianner'that Aupony turning the said `crank in the Vclockwise direction, the disk 1 -will -be actuated thereby, 'but will be no longer actuated when the crank is turned in the-opposite direction.l

In A'case v:the drilling device is used in la place where vthere is su'fiicientfioom to make 'a coinplete1r'evo`lution, the crank 3 is secured screw I11 for the purpose of obtaining a continuous rotary movement. It is of 'course 'understood that "any other suitable to fthe disk 1 for instance by `means of the means Acan be employed' for securing *the vcrank `to the disk.

The shaft 2 carries 'at the other 'end a groove 12 Iha-ving -`engaging therein the locking pin 13 under the action of the spring 14.v yThesaid pin is slidable inv a recess 15 in the frame `19 o'ffthe device rin such manner that Vonly Athe outer end of the pin shall be visible. The said V-p-in is provided with 'an aperture '-13`a`throi1'gh which lrthe shaft 2 zis caused VEto pass freely when vthe locking pin yhas ybeen driven inwardly.

t 20 isa "washer of larger size than the aperture i13a`which serves to li'i'nitlthe stroke of the-shaft 2 when thefllatter vis`=in o'ved, fthe washer contacting 4the'rocking'pin "13. 'This washer is he'ldti-n iXedposi't-lion upon the j' shaft 2 by means of a screw 21. To vchange the speed, the locking pin is pushed inwardly, and this permits of the lateral movement of the disk 1, whereby the pinion 16 is enabled to pass from. one set of apertures 1"i to another set. Y

Figure 4 shows that the groove 12 can be disposed at any suitable point insteadof at the end of the shaft 2, for instance in line with the longitudinal shaft 17 of the drill spindle. In this casethe locking pin 13 is disposed perpendicularly to the direction of the said shaft 17 within a hollow boss 18 disposed on one side of the frame 19.

Y thereof, a disk-shaped gear having an axle journaled in the socket member perpendicularly to the axis of the shank and spindle and movable laterally from said axis, said gear member having a plurality of circular series of holes adapted to mesh respectively with the teeth of the pinion, and means carried by the socket member serving to vhold the gear disk in normal position meshing with the pinion and holding the pinion from endwise movement on its spindle.

2. In a drill, the combination of a shank, a socket member carried by the lower end of the shank, said socket member having a lat'- eral and a bottom bearing socket 'having their axes at right angles to each other, a

bracket secured to the socket member and projecting downwardly terminating in a bearing hub having a bore in alinement with the bottom socket of the socket member, a tool spindle j'ournaled in the hub and having its upper end journaled in said bottom socket, a pinion mounted upon the spindle between the socket member and the hub and adapted to slide along the same but held from rotation thereon independently of the spindle, a gearwheel supported for rotation in the other socket of the soc-ket member and having a plurality of circular series of holes adapted to mesh with the teeth of the pinion in any position of adjustment ofv the pinion alongk the spindle, and means to hold the gear wheel from moving laterally out of engagement with the pinion, said last mentioned means including a transverse shaft adapted to slide lengthwise and carrying the said gear wheel and having a circular groove therein, and lockingV means disposed upon Vthe socket member and engaging said groove.

naeasse 3. In a drill the combination of a shank, a socket member carried by the lower end of this shank, the socket member being provided with a Ylateral bearing and a step bearing whose axes are at right angle, an

arm extending from the socket Ymember and ending into a bearing the opening of which Y is in line with the step bearing of the socket member, a drill-carrying shaft located in said bearing and in the step bearing, a

pinion mounted on the drill-carrying shaft` Vbetween the socket member and said step bearing and adapted to slide on the said shaft, a gear wheel revolving on the lateral bearing and comprising several circular rows of holes adapted to mesh with the teeth of the pinion inthe determined positions which the pinion may occupy, means for preventing the gear wheel from moving lat erally and from coming out ofY mesh with the pinion, said means being constituted for the purpose` of maintaining the gear Y wheel in a normal to the shaft. p l Y 4. In a drill, the combination of a disk having a plurality of concentric series of holes formed in one side thereof, supporting means for the disk permitting lateral movement thereof, a pinion having a series of round-ended teeth adapted to enter and mesh with the several series of holes and whereby the pinion is held Ifrom endwise movement, a spindle on which said pinion is journaled and means serving to normally prevent the lateral movement of the disk and disengagement from the pinion.

In testimony, that I claim the foregoing as my invention I have signed` my namein presence of two subscribing witnesses. Y

. CAMILLE CONTAL; v

position with reference Witnesses l LUoinN GiuiNDriLs, MAURICE ROUX. 

